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From 870de3bc0e80a9b79b470a45636437a0078041c1 Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Date: Tue, 7 Jul 2020 16:12:05 +0100
Subject: [PATCH] dtoverlays: Create an overlay for the Omnivision
OV7251 sensor
Adds an overlay for the OV7251 VGA global shutter sensor.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
arch/arm/boot/dts/overlays/Makefile | 1 +
arch/arm/boot/dts/overlays/README | 8 ++
arch/arm/boot/dts/overlays/ov7251-overlay.dts | 111 ++++++++++++++++++
3 files changed, 120 insertions(+)
create mode 100644 arch/arm/boot/dts/overlays/ov7251-overlay.dts
--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -115,6 +115,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
mpu6050.dtbo \
mz61581.dtbo \
ov5647.dtbo \
+ ov7251.dtbo \
ov9281.dtbo \
papirus.dtbo \
pibell.dtbo \
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -1813,6 +1813,14 @@ Load: dtoverlay=ov5647
Params: <None>
+Name: ov7251
+Info: Omnivision OV7251 camera module.
+ Uses Unicam 1, which is the standard camera connector on most Pi
+ variants.
+Load: dtoverlay=ov7251
+Params: <None>
+
+
Name: ov9281
Info: Omnivision OV9281 camera module.
Uses Unicam 1, which is the standard camera connector on most Pi
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/ov7251-overlay.dts
@@ -0,0 +1,111 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Definitions for OV7251 camera module on VC I2C bus
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+/{
+ compatible = "brcm,bcm2835";
+
+ fragment@0 {
+ target = <&i2c_csi_dsi>;
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ ov7251: ov7251@60 {
+ compatible = "ovti,ov7251";
+ reg = <0x60>;
+ status = "okay";
+
+ clocks = <&ov7251_clk>;
+ clock-names = "xclk";
+ clock-frequency = <24000000>;
+
+ vdddo-supply = <&ov7251_dovdd>;
+ vdda-supply = <&ov7251_avdd>;
+ vddd-supply = <&ov7251_dvdd>;
+
+ enable-gpios = <&gpio 41 GPIO_ACTIVE_HIGH>;
+
+ port {
+ ov7251_0: endpoint {
+ remote-endpoint = <&csi1_ep>;
+ clock-lanes = <0>;
+ data-lanes = <1>;
+ clock-noncontinuous;
+ link-frequencies =
+ /bits/ 64 <456000000>;
+ };
+ };
+ };
+ };
+ };
+
+ fragment@1 {
+ target = <&csi1>;
+ __overlay__ {
+ status = "okay";
+
+ port {
+ csi1_ep: endpoint {
+ remote-endpoint = <&ov7251_0>;
+ data-lanes = <1>;
+ };
+ };
+ };
+ };
+
+ fragment@2 {
+ target = <&i2c0if>;
+ __overlay__ {
+ status = "okay";
+ };
+ };
+
+ fragment@3 {
+ target-path="/";
+ __overlay__ {
+ ov7251_avdd: fixedregulator@0 {
+ compatible = "regulator-fixed";
+ regulator-name = "ov7251_avdd";
+ regulator-min-microvolt = <2800000>;
+ regulator-max-microvolt = <2800000>;
+ };
+ ov7251_dovdd: fixedregulator@1 {
+ compatible = "regulator-fixed";
+ regulator-name = "ov7251_dovdd";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ };
+ ov7251_dvdd: fixedregulator@2 {
+ compatible = "regulator-fixed";
+ regulator-name = "ov7251_dvdd";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1200000>;
+ };
+ ov7251_clk: ov7251-clk {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <24000000>;
+ };
+ };
+ };
+
+ fragment@4 {
+ target = <&i2c0mux>;
+ __overlay__ {
+ status = "okay";
+ };
+ };
+
+ fragment@5 {
+ target-path="/__overrides__";
+ __overlay__ {
+ cam0-pwdn-ctrl = <&ov7251>,"enable-gpios:0";
+ cam0-pwdn = <&ov7251>,"enable-gpios:4";
+ };
+ };
+};
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